1 files changed, 53 insertions, 0 deletions
diff --git a/src/backend/utils/dynamic_loader.h b/src/backend/utils/dynamic_loader.h
new file mode 100644
index 00000000000..c0532bdcbac
--- /dev/null
+++ b/src/backend/utils/dynamic_loader.h
@@ -0,0 +1,53 @@
+/*-------------------------------------------------------------------------
+ *
+ * dynamic_loader.h--
+ *    
+ *
+ *
+ * Copyright (c) 1994, Regents of the University of California
+ *
+ * $Id: dynamic_loader.h,v 1.1.1.1 1996/07/09 06:22:01 scrappy Exp $
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef DYNAMIC_LOADER_H
+#define DYNAMIC_LOADER_H
+
+#ifdef MIN
+#undef MIN
+#undef MAX
+#endif /* MIN */
+
+#ifdef WIN32
+#define MAXPATHLEN    250
+#endif
+
+#include <sys/param.h>			/* for MAXPATHLEN */
+#include <sys/types.h>			/* for dev_t, ino_t, etc. */
+#ifdef WIN32
+#include <wchar.h>
+#endif
+
+/*
+ * List of dynamically loaded files.
+ */
+
+typedef struct df_files {
+    char filename[MAXPATHLEN];		/* Full pathname of file */
+#ifdef WIN32
+    _dev_t device;			/* Device file is on */
+    _ino_t inode;			/* Inode number of file */
+#else
+    dev_t device;			/* Device file is on */
+    ino_t inode;			/* Inode number of file */
+#endif /* WIN32 */
+    void *handle;			/* a handle for pg_dl* functions */
+    struct df_files *next;
+} DynamicFileList;
+
+extern void *pg_dlopen(char *filename);
+extern func_ptr pg_dlsym(void *handle, char *funcname);
+extern void pg_dlclose(void *handle);
+extern char *pg_dlerror(void);
+
+#endif	/* DYNAMIC_LOADER_H */